Journal Impact Factor (Journal Citation Reports, by Clarivate Analytics)
If a journal title is not found in Journal Citation Reports, see if it is included in the Web of Science Master List. If not, the journal is unlikely to have a Journal Impact Factor since JCR includes only titles from the Master List.
CiteScore (by Elsevier)
Eigenfactor Scores through 2015 are freely provided on its web page. Current Eigenfactor Scores can be found either through Journal Citation Reports or by visiting a journal's web page.
CWTS Journal Indicators (by Leiden University)
Journal Web Sites
Journal-level metrics can often be found on a journal's website if it was given one. See its "About" section, or "Journal Home," "Overview," or similar areas of the journal web site. See the example and links below.
A journal's web site should also provide contact information for their editors and editorial board who may be able to advise.
It depends. Various disciplines measure their publications differently from one another, and also have differences in their publishing norms. One shortcoming of bibliometrics is some types are not normalized for field differences.
Here is a comparison of the Journal Impact Factors (JIFs) between a medical journal with one in library and information science journal. These journals are ranked as top ones in their Journal Citation Reports (JCR) category. Notice their differences. As a field, medicine has a longer publishing history and their articles cite others more frequently in comparison to library science, accounting for their large differences in JIF.
|JCR Category (Discipline)||Journal Title||Year of First Publication||JIF (2021)||Number of Citations|
|Medicine, General and Internal||Lancet||1823||~200||403,222|
|Information Science and Library Science||International Journal of Information Management||1980||~18||17,621|
Source: JCR: Journal Citation Reports, January 2023. https://jcr.clarivate/jcr/
Also, the length of time a publication has been in existence and the number of its articles cited influence its bibliometric indicators; publications that are long-established tend to be favored. In summary, a standardized ranking or scale that identifies "high impact" for all disciplines does not exist.
1. Keep in mind that not all scholarly journals are included in indexes like Scopus or Web of Science. Those that are not included typically do not have journal metrics.
2. Use tools such as Scopus Preview (CiteScore) and others like it to identify metrics.
3. Comparisons. Comparing journals with others in a field or discipline is not an exact science; disciplines often overlap in what they study, and their boundaries can be unclear. However, comparisons can be done for exploratory purposes. For this example, a geoscientist can get an idea of CiteScore ranges for journals in his or her field (with 31.07 being the highest to 3.71 being the lowest in 2018), and possibly mention this range in a review or for a promotion and tenure bid.
Image: Scopus Preview, Earth and Planetary Sciences. https://www.scopus.com/sources.uri
If your journal does not have a Journal Impact Factor or other bibliometrics, it does not necessarily indicate it as a poor quality or low impact publication. Here are some reasons a journal may not have one:
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